Sometimes all you need is a classic, and these Smartwool socks have what you need to stay comfortable on any adventure. Sold as one pair. Crew socks that sit at the calf. Bracing on the arch provides additional support for all day comfort. Flat toe seam helps reduce chafing and provide all day comfort. SI 5377810- Natural. SI 5377822- Black. 59% wool, 6% recycled nylon, 2% elastane, 1% polyester. Machine wash warm, inside out. Tumble dry low. Made in the USA.